warning light MERCEDES-BENZ CLK320 CABRIOLET 2003 C208 Owner's Manual

2 ContentsMultifunction steering wheel,
multifunction display ................. 84
Trip and main odometer and sub
menu ............................................. 88
Audio systems .................................. 89
Radio .............................................. 89
CD player ....................................... 90
Cassette player ............................. 91
Telephone .......................................... 92
Telephone book ............................ 92
Redialing ....................................... 94
Incoming call ................................ 96
Navigation system ............................ 97
Trip computer ................................... 98
Malfunction/warning message
memory ...................................... 100
Individual settings ......................... 102
Setting the audio volume .............. 104
Flexible service system (FSS) ...... 105
Engine oil level indicator .............. 108
Engine oil consumption ................ 109
Exterior lamp switch ......................110
Night security illumination ..........111
Headlamp cleaning system .......... 112Combination switch ....................... 113
Hazard warning flasher switch .... 115
Automatic climate control ............. 116
Display and controls .................. 118
Basic setting ................................ 118
Economy ....................................... 119
Special settings ........................... 119
Rear window defroster .............. 120
Air recirculation .........................121
Residual engine heat
utilization .....................................121
Dust filter .................................... 122
Audio and telephone, operation .. 123
Power windows .............................. 142
Interior lighting ............................. 145
Sun visors ....................................... 146
Illuminated vanity mirrors .......... 146
Interior ............................................ 147
Storage compartments, armrest and
cup holder .................................. 147
Glove box ..................................... 147
Ashtray .............................................150
Lighter .............................................. 151
Cargo tie down rings .....................152Parcel net in front passenger
footwell ....................................... 152
Armrest, rear bench ...................... 152
Telephone, general ........................ 153
Cellular telephone ......................... 153
Garage door opener ....................... 154
Soft top ............................................ 158
Wind screen .................................... 166
Roller blind (horizontal) ............... 170
Roller blind (vertical) .................... 171
DrivingControl and operation of radio
transmitters ............................... 174
The first 1 000 miles
(1 500 km) ................................. 175
Maintenance ................................... 175
Catalytic converter ........................ 176
Emission control ............................ 177
Tele Aid ........................................... 178
Steering lock ................................... 188
Starting and turning off the
engine ......................................... 190
Automatic transmission ............... 191

3 ContentsParking brake .................................200
Driving instructions ...................... 201
Drive sensibly – save fuel ......... 201
Drinking and driving ................. 201
Pedals ........................................... 201
Power assistance ........................202
Brakes ..........................................202
Driving off ...................................203
Parking ........................................204
Tires .............................................204
Snow chains ................................207
Winter driving instructions ......207
Standing water ...........................209
Passenger compartment ...........209
Traveling abroad ........................209
Cruise control ................................. 210
Brake assist system (BAS) ............ 212
Antilock brake system (ABS) ....... 214
Electronic stability program
(ESP) ........................................... 216
What you should know at the gas
station .........................................220
Check regularly and before a long
trip ...............................................222
Instrument cluster displayMalfunction and indicator lamps in
the instrument cluster ............. 224
On-board diagnostic system Check
engine malfunction indicator
lamp ............................................. 224
Brake warning lamp .................. 225
Supplemental restraint system
(SRS) indicator lamp ................. 226
Fuel reserve and fuel cap
placement warning ................... 226
Electronic stability program (ESP)
— warning lamp .......................... 227
BAS/ESP malfunction indicator
lamp ............................................. 227
ABS malfunction indicator
lamp ............................................. 227
Telescoping steering column –
indicator lamp ............................ 228
Seat belt warning lamp ............. 228
Malfunction and indicator lamps in
the center console .................... 228
AIRBAG OFF indicator lamp .... 228
Roll bar warning lamp .............. 229Malfunction and warning messages
in the multifunction display ...230
DISPLAY DEFECTIVE (engine
control unit) ................................ 231
DISPLAY DEFECTIVE (several
systems) ....................................... 231
BATTERY/ALTERNATOR ...........232
ABS-SYSTEM ...............................233
BRAKE ASSIST ...........................233
BRAKE LINING WEAR ..............234
BRAKE FLUID .............................234
PARKING BRAKE .......................235
ENGINE FAN ...............................235
COOLANT (coolant level) ..........236
COOLANT TEMP. (coolant
temperature) ...............................237
LIGHTING SYSTEM ....................238
LIGHT SENSOR ...........................239
STEER. WHEEL ADJUST. ...........239
ENGINE OIL LEVEL ...................240
ELEC. STABIL. PROG. (Electronic
stability program) ...................... 241
REMOVE KEY ............................. 241
WASHER FLUID .........................242

17 Instruments and controls
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index For more detailed descriptions see Index on page 324.
For adjustment of air outlets, refer to automatic climate
control, see page 116.
1Side air outlet, adjustable
2Air volume control for side air outlet
3Exterior lamp switch, see page 110
4Parking brake release, see page 200
5Parking brake pedal, see page 200
6Hood lock release, see page 250
7Combination switch, see page 113
8Cruise control switch, see page 210
9Multifunction steering wheel, see page 84
Horn (with electronic key in steering lock
position 1 or 2)
10Instrument cluster, see page 78
11Voice control system lever, see separate operating
instructions
12Steering lock with ignition/starter
switch, see page 18813Center air outlets, adjustable
14Air volume control for center air outlets
15Left front seat heater switch, see page 51
16Headlamp washer switch, see page 112
17Roll bar switch, see page 48
Roll bar warning lamp, see page 229
18Hazard warning flasher switch, see page 115
19Central locking switch, see page 33
20Switch for tow-away alarm, see page 40
Indicator lamp for antitheft alarm system, see
page 39
21Right front seat heater switch, see page 51
22Automatic climate control, see page 116
Rear window defroster switch, see page 120
23Glove box (illuminated with electronic key in
steering lock position 1 or 2), see page 147
24Audio system, see page 123
25Storage compartment
26Ashtray with lighter, see page 150

21
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Navigation system ............................ 97
Trip computer ................................... 98
Malfunction/warning message
memory ...................................... 100
Individual settings ......................... 102
Setting the audio volume .............. 104
Flexible service system (FSS) ...... 105
Engine oil level indicator .............. 108
Engine oil consumption ................ 109
Exterior lamp switch ......................110
Night security illumination ..........111
Headlamp cleaning system .......... 112
Combination switch .......................113
Hazard warning flasher switch ....115
Automatic climate control .............116
Display and controls ...................118
Basic setting .................................118Economy ....................................... 119
Special settings ........................... 119
Rear window defroster .............. 120
Air recirculation .........................121
Residual engine heat
utilization .....................................121
Dust filter .................................... 122
Audio and telephone, operation .. 123
Power windows .............................. 142
Interior lighting ............................. 145
Sun visors ....................................... 146
Illuminated vanity mirrors .......... 146
Interior ............................................ 147
Storage compartments, armrest and
cup holder .................................. 147
Glove box ..................................... 147Ashtray ............................................ 150
Lighter ............................................. 151
Cargo tie down rings ..................... 152
Parcel net in front passenger
footwell ....................................... 152
Armrest, rear bench ...................... 152
Telephone, general ........................ 153
Cellular telephone ......................... 153
Garage door opener ....................... 154
Soft top ............................................ 158
Wind screen .................................... 166
Roller blind (horizontal) ............... 170
Roller blind (vertical) .................... 171

111 Exterior lamp switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
With the electronic key removed and the driver’s door
open, a warning sounds and the message “SWITCH OFF
LIGHTS” in the multifunction indicator appears if the
vehicle’s exterior lamps (except standing lamps) are not
switched off.
Fog lamps will operate with the parking lamps and/or
the low beam headlamps on. Fog lamps should only be
used in conjunction with low beam headlamps. Consult
your State or Province Motor Vehicle Regulations
regarding allowable lamp operation.
Fog lamps are automatically switched off when the
exterior lamp switch is turned to position D.Daytime running lamps (Canada only)
When the engine is running and the selector lever is in
a driving position, the low beam headlamps (includes
parking lamps, side marker lamps, taillamps and
license plate lamps) are automatically switched on.
When shifting from a driving position to position “N”
or “P”, the low beam switches off (2 seconds delay).
For nighttime driving the exterior lamp switch should
be turned to position B to permit activation of the
high beam headlamps.
Night security illumination
When exiting the vehicle after driving with the exterior
lamps on, they switch on again for added illumination
for approximately 30 seconds after closing the last door.

202 Driving instructions
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Power assistance
BrakesExcessive use of salt and other snow melting chemicals
spread on roads during the winter months may cause a
build up of moisture or residue to form on the braking
components. This build up or residue could cause light
corrosion of the braking components if the vehicle is
parked with the brakes cold. Apply steady and even
braking pressure when stopping the vehicle to warm up
and dry the brake components.
Important!
Please pay attention to the function of the brake assist
system (BAS), see page 212.
If the parking brake is released and the brake warning
lamp in the instrument cluster stays on, the brake fluid
level in the reservoir is too low.
Brake pad wear or a leak in the system may be the
reason for low brake fluid in the reservoir.
Have the brake system inspected at an authorized
Mercedes-Benz Center immediately.
Wa r n i n g !
When the engine is not running, the brake and
steering systems are without power assistance.
Under these circumstances, a much greater effort is
necessary to stop or steer the vehicle.Wa r n i n g !
After driving in heavy rain for some time without
applying the brakes or through water deep enough
to wet brake components or salty road conditions,
the first braking action may be somewhat reduced
and increased pedal pressure may be necessary to
obtain expected braking effect. Be sure to maintain
a safe distance from vehicles in front.Resting your foot on the brake pedal will cause
excessive and premature wear of the brake pads.It can also result in the brakes overheating thereby
significantly reducing their effectiveness. It may
not be possible to stop the vehicle in sufficient time
to avoid an accident.

223
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and indicator lamps in
the instrument cluster .............224
On-board diagnostic system Check
engine malfunction indicator
lamp ..............................................224
Brake warning lamp ..................225
Supplemental restraint system
(SRS) indicator lamp ..................226
Fuel reserve and fuel cap
placement warning ....................226
Electronic stability program (ESP)
— warning lamp ..........................227
BAS/ESP malfunction indicator
lamp ..............................................227
ABS malfunction indicator
lamp ..............................................227
Telescoping steering column –
indicator lamp .............................228
Seat belt warning lamp .............228Malfunction and indicator lamps in
the center console .................... 228
AIRBAG OFF indicator lamp .... 228
Roll bar warning lamp .............. 229
Malfunction and warning messages
in the multifunction display ... 230
DISPLAY DEFECTIVE (engine
control unit) ................................ 231
DISPLAY DEFECTIVE (several
systems) ...................................... 231
BATTERY/ALTERNATOR .......... 232
ABS-SYSTEM .............................. 233
BRAKE ASSIST ........................... 233
BRAKE LINING WEAR .............. 234
BRAKE FLUID ............................ 234
PARKING BRAKE ....................... 235
ENGINE FAN ............................... 235
COOLANT (coolant level) ......... 236
COOLANT TEMP. (coolant
temperature) ............................... 237LIGHTING SYSTEM ....................238
LIGHT SENSOR ...........................239
STEER. WHEEL ADJUST. ...........239
ENGINE OIL LEVEL ...................240
ELEC. STABIL. PROG. (Electronic
stability program) ...................... 241
REMOVE KEY ............................. 241
WASHER FLUID .........................242
TELE AID .....................................243

224 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Malfunction and indicator lamps
in the instrument cluster
General information:
If a bulb in the instrument cluster fails to light up
during the bulb self-check when turning the electronic
key in steering lock to position 2, have it checked and
replaced if necessary.
On-board diagnostic system
Check engine malfunction indicator lamp
Engine malfunction indicator lamp. If the
“CHECK ENGINE” malfunction indicator
lamp comes on when the engine is running,
it indicates a malfunction of the fuel management
system, emission control system, systems which impact
emissions, or the fuel cap is not closed tight (check the
fuel cap). If the “CHECK ENGINE” lamp is illuminated
continuously and the vehicle is driving normally, you
may still drive the vehicle, however, in all cases, we
recommend that you have the system checked at your
authorized Mercedes-Benz Center as soon as possible.
If the “CHECK ENGINE” lamp comes on continuously
and / or the vehicle is not driving normally (e.g.
malfunction of the fuel management system or running out of fuel), serious damage can occur to the emission
system. Please contact your authorized Mercedes-Benz
Center immediately.
The Sequential Multiport Fuel Injection (SFI) control
module monitors emission control components that
either provide input signals to or receive output signals
from the control module. Malfunctions resulting from
interruptions or failure of any of these components are
indicated by the “CHECK ENGINE” malfunction
indicator lamp in the instrument cluster and are
simultaneously stored in the SFI control module.
If the “CHECK ENGINE” malfunction indicator lamp
comes on, have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
With some exceptions, the control module switches off
the “CHECK ENGINE” malfunction indicator lamp if the
condition, causing the lamp to come on, no longer exists
during three consecutive cycles. See also page 226 for
fuel cap placement warning.
An on-board diagnostic connector is located in the
passenger compartment near to the parking brake
pedal, allowing the accurate identification of system
malfunctions through the readout of diagnostic trouble
codes.
CHECK
ENGINE

227 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Electronic stability program (ESP) — warning lamp
The yellow ESP warning lamp in the
speedometer dial comes on with the
electronic key in steering lock position 2.
It should go out with engine running.
See page 216 if the warning lamp lights up or flashes
when the vehicle is moving.
BAS / ESP malfunction indicator lamp
The malfunction indicator lamp for the ESP
is combined with that of the BAS.
The yellow BAS/ESP malfunction indicator
lamp in the instrument cluster comes on with the
electronic key in steering lock position 2. It should go
out with the engine running.
If the BAS/ESP malfunction indicator lamp remains
illuminated with the engine running, see page 212 for
notes on the brake assist (BAS) and page 216 for notes
on the electronic stability program (ESP).ABS malfunction indicator lamp
The ABS malfunction indicator lamp in the
instrument cluster comes on with the
electronic key in steering lock position 2 and
should go out with the engine running.
When the ABS malfunction indicator lamp and the
malfunction message in the instrument cluster remains
illuminated while the engine is running, it indicates
that the ABS has detected a malfunction and has
switched off. In this case, the brake system functions in
the usual manner, but without antilock assistance.
With the ABS malfunctioning, the BAS and ESP are also
switched off. Both malfunction indicator lamps and the
ABS malfunction message in the multifunction display
come on with the engine running.
If the charging voltage falls below 10 volts, the
malfunction indicator lamp comes on and the ABS is
switched off. When the voltage is above this value again,
the malfunction indicator lamp should go out and the
ABS is operational.
Have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
See page 214 for notes on the antilock brake system
(ABS).
BAS
ESP
ABS

228 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Telescoping steering column – indicator lamp
The indicator lamp in the instrument cluster
comes on with the electronic key in steering
lock position 2 and should go out with the
engine running.
If the indicator lamp does not go out after starting the
engine, the adjustable steering column is not properly
locked.
For locking the adjustable telescoping steering column,
see page 73.
Seat belt warning lamp
With the electronic key in steering lock
position 2, the seat belt warning lamp comes
on and a warning sounds for approx.
6 seconds if the driver’s seat belt is not fastened.Malfunction and indicator lamps in the
center console
AIRBAG OFF indicator lamp
The 7 indicator lamp will light up for approx.
6 seconds when you turn the electronic key in steering
lock to position 1 or 2.
The 7 indicator lamp stays lit as long as a
BabySmart
TM compatible child seat is properly installed
on the front passenger seat. It indicates that the front
passenger airbag is switched off.
See page 59 for BabySmart
TM deactivation system.
BabySmart
TM is a trademark of Siemens Automotive Corp.